diff options
| -rw-r--r-- | src/soc/intel/apollolake/bootblock/cache_as_ram.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/soc/intel/apollolake/bootblock/cache_as_ram.S b/src/soc/intel/apollolake/bootblock/cache_as_ram.S index 9d2bba01e8..cd301ac5e9 100644 --- a/src/soc/intel/apollolake/bootblock/cache_as_ram.S +++ b/src/soc/intel/apollolake/bootblock/cache_as_ram.S @@ -63,7 +63,9 @@ clear_var_mtrr: /* Configure default memory type to uncacheable (UC) */ mov $MTRR_DEF_TYPE_MSR, %ecx rdmsr - and $MTRR_DEF_TYPE_MASK, %eax + /* Clear enable bits and set default type to UC. */ + and $~(MTRR_DEF_TYPE_MASK | MTRR_DEF_TYPE_EN | \ + MTRR_DEF_TYPE_FIX_EN), %eax wrmsr post_code(0x24) |